Emissions of primary PM fell in the EU by 14 %
for PM10 and 16 % for PM2.5 between 2002 and 2011. The reductions in the same period for
the 32 EEA member countries were 9 % for PM10
and also 16 % for PM2.5.

The graphs are based on the 93.2 percentile of maximum daily 8 hours mean concentration values corresponding to the 26th highest daily maximum of the running 8h-mean; they present the range of concentrations at all station types (in μg/m3) officially reported by the EU Member States and how the concentrations relate to the target value set by EU legislation (marked by the red line).
The diagram indicates the lowest and highest observations, the means and the lower and upper quartiles. The lower quartile splits the lowest 25 % of the data and the upper quartile splits the highest 25 % of the data.

All stations in EU Member States, with at least 75 % data coverage for at least eight years were included in the analysis. Concentrations per station type are given in μg/m3. In the diagrams a geographical bias exists towards central Europe where there is a higher density of stations.
The 93.2 percentile of daily max 8-h mean values is directly related to the target value for O3, as 25 days per year are allowed to have exceedances of the target value threshold of 120 μg/m3.

The data presented were derived from a consistent set of stations in all years.
Statistically significant trends (level of significance 0.1) are calculated by applying the Mann-Kendall test. Increasing concentrations are indicated with red dots and decreasing concentrations with green dots, when statistically significant. The applied method is described in de Leeuw, 2012.

The graphs show the percentage frequency distribution of the 26th highest daily maximum of the running 8h-mean O3 concentrations for the various types of stations (top); AOT40 concentrations measured in rural stations in the EU for the protection of vegetation (accumulated over May to July) (middle) and for the protection of forests (accumulated over April to September) (bottom).